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Finding the Fourth Proportional to 279,542.59, 385,667.48 and 158,613.85

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Solution

The fourth proportional to 279,542.59, 385,667.48 and 158,613.85 is: 218,829.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,542.59 : 385,667.48 = 158,613.85 : x
  2. Step 2: Convert to fraction form
    279,542.59/385,667.48 = 158,613.85/x
  3. Step 3: Cross multiply
    279,542.59x = 385,667.48 × 158,613.85
  4. Step 4: Simplify right side
    279,542.59x = 61,172,201,639.63
  5. Step 5: Solve for x
    x = 61,172,201,639.63/279,542.59
  6. Step 6: Final answer
    x = 218,829.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.